Adding Fractions
Subtracting Fractions
Parts of Fractions
Finding the LCM&LCD
100
To add fractions they must have the same ______.
denominator
100
7/12-5/24=
3/8
100
the top digit in a fraction
numerator
100
Find the LCM of 30 & 50
150
200
When adding fractions with unlike denominators, you must find the ______.
2/5 +1/10=
the least common multiple
200
5/6 - 1/3 =
1/2
200
The bottom digit of a fraction
denominator
200
`Find the LCM of 10 & 100
100
300
When adding fractions with a common denominator, what do you do with the numerators?
1/3+1/3 =
add. 2/3
300
When subtracting fractions with a common denominator, what do you do with the numerators?
subtract
300
a fraction with the numerator greater than the denominator
an improper fraction
300
Find the LCM of 15 & 20
60
400
Fractions can be simplified if the numerator and denominator have common _______.
2/4 =( / )
common factors
400
To simplify our answers, we _________.
find the greatest common factor and divide both the numerator and denominator by
400
A number with a whole number and a fraction
a mixed number
400
Find the LCM of 28 and 42
84
500
4/8 + 2/4
1
500
9/24-2/8
1/8
500
1/4= x/12
x=3
500
Find the LCD for 1/4 and 1/6
12
600
2/10 + 3/10
5/10
600
2/5 - 3/15
1/5
600
2/5=x/10
x=4
600
What is the LCD for 1/6 and 2/5?
30
700
2/12 + 3/4
11/12
700
8/12-3/12
What is 5/12
700
Draw 2/4 and 1/2. Are these equivalent fractions? how do you know?
Yes they are equivalent because the shaded area of each fraction is the same.
700
What is the LCD for 3/4 and 3/5?
20